# include<iostream> # include<cstdio> # include<iomanip> using namespace std; int main(){ int n=0; //捐款人数 float sum=0,a; //a每人捐款数量 //sum是捐款总额 for(int i=1;i<=1000;i++){ cin>>a; n++; sum+=a; if(sum>=100000) break; } printf("%d %.2f",n,sum/n); return 0; }